Pulley for sashes or similar purposes.



PATBNTEDMAVIY 24, w. LIVINGSTONE.

, PULLEY FOR SASHBS 0R SIMILAR PURPOSES.

mfvsmbsef APPLICATION IIL ED APR 4. 1903.

no. Mons-L.

l i'izze 0196s."

' nongeoesef t tres sm OF ICE.

Patented May 24, 1904.

' WILLIA LivrNGsToNE; orr Us me, NEW YoRK, AssreuoR-ro''sPEcImcArro'u'rorming partof Letters Patent nofvedeee; dated Ma 24,1904. l

- f -'H.1MSELF,'AND s. HARRIS; POMEROY, or cHrcAso, ILLINOIS.

epu ation filed A art. 1903. Serial in. 151,190. hi model.)

citizen ofthe United States, and a resident of' Flushing, in the countyofQu eens andState of NewYorln-have invented certain new and usefulfImprovements in Pulleys. for Sashes or SimilarPurposes, of which thefollowing is a v The object offthe'invention is to provide a;

l light, stro 1ig,',and'cheap pulley 1 in the manufactureof which theitem ofscrap will besub-i after described, and particularly pointed outjstantially eliminated.

bination: and arrangement of component parts and; the details ofconstruction to -bejherein-- in the claims. ,1: c:

trate my invention, Figure 1 isa side ieleva-Q .tion ofone'constructionof pulley. Fig. 2 is, a transverse sectional view of: the same. Fig. 2

3 is a side elevation of the pulley with the rim i removed Fig, .4; is aside elevation'of a pul-' le'y constructed in accordance with myinvention provided with a; lockin -disk before the;

prongs of the latterare bent down.- Fig. 5" is a similar view with theprongs of the locking-disk ben-tdown in position. Figs. 6 and -7 areviews of theblank from which-the hub 3 and arms'ior spokes} are. formed.Fig.1 8 is 'a-i view of'one blankrolled or pressed into tubu-1lar-shape. Fig. 9 is; a yiew showing the arms or spokes bent out.Fig.1!) is a view at right.

' angles toFig. 9. Fig. 11 is a'view from the; opposite side of Fig.10.Figs. 12 and-l3are' i formed of substantially U shape in crossstion,although this particular configuration is unimportant. Located centrallyofthe width 'Ofthe r m and contiguousto eachendof the same is-a hole a.Theseholesare spaced a distance apartequal to .thearc between thereduced portions 0 of thearms 6 to be de- ,In Figs. 6 and 7 both exactlyalike, but so placed toward: each other as to make the one rightands-the. other 'f scribed, when the ends of the ,rimabut against -eachother. i

two blanks B B are shown,

left, fron1 which thearms and hub. ofthe pulley are to be builtup. Eachof these blanks B B is slitted lengthwise to within a distance l I equalhalf the lengthof the hubfrOm the I I .TQthis end, the inyentionincludes the comotherend into four strips of equal .widt-h,

three of which are of equal length, 6 5?), while I E fit into one of:theiholes a a in; the rim above described. The width of these blanks BJ3 is equal, to the. circumference of the contemplated hub,,who secentral diameterwill be equal. tothe diameter of the hole yplusthethickness of metal. The unslitted portionsb' and bf of the blanksB B areintended to form each one-half of the hub when rolled or pressed into,circular form, while the slitted strips 6 6 band I) ,wilhbe spread openand flattened at right angles to the hubxto'form four arms in the shapeof,.a cross. So much of the arms 6 b b as exceeds-the length of b by c(,10,will be bent at right angles to the arms 6 6 din a line parallel tothe axis of the hub, but in opposite direction thereto, Figs. 9, '10,,8;I10l 13,

so that the diameter fromoutsideto outside of the opposite arms I) b andfrom the outside of one arm 6 to the inner end of the reduced portion 0of arm 6 willobe equal to the inner diameter of the rim A ,-Fig. f1. Allthe arms .6 6b and t are slightly crankedlout of their normal planeabout midway betweenthe hubs bringing their exterior portions into the.central diametrical plane of the rim. I The operation of putting theseparts together and completing the pulley is as follows: The reduced andtheir peripheral ends for the purposeof 1 portion 0 of the arm 6 ofeither half of-jthe' hub being inserted into either hole a of the rimfrom either side thereof will naturally determine the position of theother half by inserting its reduced portion 0 of the arm 5 into theother hole a of the rim from the opposite side, while the ends 0 0 0 c cc of the other arms will come into tangential contact with the innercircumference of the rim, and as the ends 0 project from the arms 6 onone side of the rim to the other side thereof it follows that when thoseends a tangential to the inner circumference of the rim are brought intoclose concentric contact with the rim the corresponding arms 6 and thehalf-hubs b Will be drawn close together and form a continuous hubprojecting from both sides of the arms, Figs. 16 and 17, and completethe pulley.

From the above description it will appear that the two reduced portions0 and 0 of the arms 72 5 inserted into the holes a a of the rim, notonly hold the same together where .its ends meet and abut, but at thesame time act as carriers and prevent its slipping upon the concentricalbearing-surfaces of the ends 0, while this concentric contact of theends 0 with the rim will prevent any lateral shifting of the same andincrease the rigidity of the pulley beyond that already accomplished bythe fact of the arms and hub being integral. If in the construction ofpulleys of larger diameter additional means are required to fasten thetwo halves of the hub and their respective arms together nearer thecenter, I have provided a locking-disk D, having an axial openingcorresponding to the bore of the hub and laterally-projecting prongsclextending alter nately in opposite directions. This disk is placedbetween the two halves of the hub and their respective arms, with theprongs d in their proper position close to the arms, Fig. 4. Whenclenched over and against the arms, the three parts thus fastenedtogether will appear and to all intents and purposes be a solid hub witharms radiating therefrom and integral therewith.

I do not want to confine myself absolutely to either the number of armsor the precise form or details as illustrated in the drawings and hereindescribed; but

What I claim, and desire to secure by Letters Patent, is

1. In a sheet-metal pulley, the combination with the rim, of a tubularsheet-metal hub comprising two sections arranged end to end, a set ofarms integral with each of said sections extending radially from theinner end of the same, each of said sets comprising members of differentlengths the longer of said members having angular portions engaging therim, substantially as described.

2. In asheet-metal pulley, the combination with the rim, of a tubularsheet-metal hub com prising two sections arranged end to end, a set ofarms integral with each of said sections extending radially from theinner ends of the same, each of said sets comprising members ofdifferent lengths the longer of said members having angularly-arrangedportions extending in parallelism with but in an opposite direction tothe hub-section carrying the same, substantially as described.

3. In a sheet-metal pulley and in combination, a sheet-metal split rimhaving openings therethrough contiguous to each end of the same, and atubular hub comprising two sections arranged end to end, a set of armsintegral with each of said sections extending radially from the innerend of the same, each of said sets comprising members of differentlengths, the longer of which have angularlyextending portions engagingthe rim, and the other of said members having parts interlitting saidopenings in the rim, substantially as described.

4. In a sheet-metal pulley, the combination with the rim, of a tubularsheet-metal hub comprising two sections arranged end to end, a set ofarms integral with each of said sections extending radially. from theinner end of the same, portions at the outer extremities of said armsengaging said rim, and a locking device interposed between saidhub-sections, substantially as described.

5. In a sheet-metal pulley, the combination with the rim, of a tubularsheet-metal hub comprising two sections arranged end to end, a set ofarms integral with each of said sections extending radially from theinner end of the same, portions at the outer extremities of said armsengaging said rim, and a locking-disk interposed between saidhub-sections having portions engaging said arms, substantially asdescribed.

6. In a sheet-metal pulley, the combination with the rim, of a tubularsheet-metal hub comprising two sections arranged end to end, a set ofarms integral with each of said sections extending radially from theinner end of the same, portions at the outer extremities of said armsengaging said rim, and a locking-disk interposed between saidhub-sections having angularly-extending prongs disposed on oppositesides thereof engaging said arms, substantially as described.

Signed at Flushing, in the county of Queens and State of New York, this7th day of March, A. D. 1903.

WILLIAM LIVINGSTONE.

Witnesses:

CLINTON B. SMITH, EDWIN H. HULMAN.

